You are not totally off with the items you listed, but I think you should have considered looking around at the barb forum and looking at other barb profiles and look what they went for.
But to be constructive you need more str, crit and crit-dmg in generel. You have way too many items with low or none str at all (legs for example, can easily be upgraded with more str without paying much)
Edit: And get critical on pretty much everything you can.
General tips for ww barbs:
get 24% movement speed helps you ALOT as "Bille" already pointed out
Get as much crit chance as you can - crit not only gives you more damage but also helps you build up fury, more fury means keeping Wotb up ALOT easier
Dont forget Attack Speed: gives you more attacks, witch means more tornado ticks = more attacks per tornado = more crits = more fury
I would recommend you getting a Unity ring (You are able to get a cheap one from the AH), since you dont need the life steal from your Bul-Katho ring, plus the Unity gives you crit chance and more damage to elites
I really hope that i could be at your service
Btw you are always welcome to have a look at my barb build, maybe it could help you getting the bigger picture
My battletag is Karaz#2866, would love to give you the direct link, but i havent made 10 posts yet